Prosoft-technology CLX-APACS Manual de usuario descargar pdf (Pagina 44)

Page 38 QTS-CLX-APACS March 2015

Accessing Data

Required Connections

In master mode, the QTS-CLX-APACS does not begin scanning the I/O bus until all

ControlLogix connections to the module are present.

In monitor mode, the module does not wait for the ControlLogix connections.

I/O Data

Use the aliases created by ClxApacsMonCfg or ClxApacsMasCfg to access data to

ensure that you are using the correct address.

Each discrete point is mapped to a SINT in the ControlLogix. The data value is the low

bit in the SINT. Use the low bit of the Alias to read or change the data value.

Each analog point is mapped to a REAL in the ControlLogix.

Program/Run

In master mode, the QTS-CLX-APACS does not scan I/O in program mode.

Diagnostic Data

The QTS-CLX-APACS maintains diagnostic counters and other diagnostic status

information.

SlotStatus Bits

The QTS-CLX-APACS maintains an array of bits that indicate the status of the APACS

modules.

Use the slot status bits to determine when you can access data from a module. Some

APACS modules take several seconds to go online.

In master mode, the bit is 0 if the module has good communication status and is 1 if the

associated module is in error or is not responding.

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Prosoft-technology CLX-APACS Manual de usuario Pagina 44